Hi All,

I am I have created a plane using Surface -> Plane. ( it create plane-19) But when I check the mass flow rate in using surface integral on that it gives some mass flow rate which is different from the mass entering the domain.

The results look resonable. Did any one has come across similar issue and any solution ?

This issue is not uncommon. Please specify how much is the difference between mass flow rates across the two surfaces.

The differnce is close to 200% to 300%

This difference is definitely not within acceptable limits (a percent or two). Error lies either in surface creation (check coordinates) or in solution (converged?/correct models).